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1

Analysis of kinematical and kinetic characteristics on double donkey headed oil suction pump

双驴头抽油机的运动与动力特性分析

2

Modifying conventional pumping unit into twin-horsehead pumping unit

常规抽油机改造为双驴头抽油机的设计与实践

3

Kinematics and dynamics analysis about double horse head pumping unit with arc back horse head

后驴头为圆弧的双驴头抽油机运动与动力分析

4

Suggestions on improvement of swing horsehead beam pumping unit

关于旋转驴头抽油机改进设计的建议

5

pan head break mandrel blind rivets , in stainless steel material

不锈钢平圆头抽芯铆钉

6

pan head break mandrel blind rivets , in aluminum alloy material

铝合金平圆头抽芯铆钉

7

Mushroom head break mandrel closed end blind rivets

封闭型沉头抽芯铆钉

8

Mushroom head break mandrel blind rivets

开口型扁圆头抽芯铆钉

9

Failure Analysis of Walking Beam of Dual Horsehead Pumping Unit Based on Stress Measurement

基于应力测试的双驴头抽油机游梁失效研究

10

Solution to the problems in field use of dual horsehead pumping unit

双驴头抽油机现场使用中存在问题的改进

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